Question 1037662
sqrt(7-x)+2=1-x
sqrt(7-x) = -1-x
Square both sides
7-x = x^2 + 2x + 1
x^2 + 3x - 6 = 0
*[invoke solve_quadratic_equation 1,3,-6]
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Check each answer:
x =~ 1.37
Doesn't work unless you use sqrt(7-x) = -2.37, not the principal root.
Ignore.
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x = -4.37
sqrt(11.37)+2 =? 5.37
Is a solution.